Tag

In Vivo

All articles tagged with #in vivo

neuroscience23 days ago•147 min saved

Human cortical organoids form integrated xenocortex in mice

Researchers depleted the mouse dorsal pallium and neonataly engrafted human stem-cell–derived cortical organoids (hCOs) to create xenocortical (XCX) mice, in which hCOs expand to occupy most of the cortex, differentiate into diverse human cortical cell types (including layer 5 ET neurons), and integrate with host circuits as shown by in vivo calcium imaging and electrophysiology. Behavioral analyses reveal largely preserved locomotion with selective deficits in tasks needing neocortex/hippocampus, while unsupervised MoSeq analysis indicates grafts yield distinct but intermediate behavioral repertoires. The platform also enables modeling of hypoxic injury to developing human cortical tissue and could facilitate disease modeling and therapeutic discovery using large human-derived cortical grafts and behavioral readouts.

via Nature|

#in-vivo #neural-circuits #neuroscience

science5 months ago•3 min saved

Intellia's in vivo CRISPR therapy hits Phase 3 for hereditary angioedema, signaling a potential one-time treatment

Intellia Therapeutics said its one-time, in vivo CRISPR-based treatment for hereditary angioedema met its Phase 3 primary endpoint, reducing attacks by 87% vs placebo and achieving 62% attack-free patients at six months after a liver-directed infusion, with a favorable safety profile. The company has started a rolling FDA submission and targets a U.S. launch in 2027 if approved.

via CNBC|

#crispr #gene-editing #hereditary-angioedema

science7 months ago•91 min saved

Base editing reverses CHD3-linked neurodevelopmental defects in mice

Researchers created a humanized CHD3 R1025W mouse model of SNIBCPS and used a TadA-embedded adenine base editor delivered by dual AAVs to correct the pathogenic A•T base pair in the brain, restoring CHD3 protein levels and rescuing social, cognitive, and motor deficits; supplementary nonhuman primate work showed widespread neuronal transduction, supporting translational potential for CHD3-related neurodevelopmental disorders.

via Nature|

#base-editing #chd3 #in-vivo

health9 months ago•3 min saved

First-In-Body Engineering of Cancer-Fighting Cells

Scientists have successfully engineered cancer-fighting T-cells inside patients' bodies for the first time, potentially making CAR T-cell therapy faster, cheaper, and more accessible for treating multiple myeloma, with promising early results and manageable side effects.

via Good News Network|

#cancer #car-t-cell-therapy #health

science1 year ago•4 min saved

KAIST Develops CRISPR-Based System for Precise RNA Modification in Living Cells

KAIST researchers developed a precise RNA modification technology using CRISPR-Cas13 and a hyperactive NAT10 variant, enabling targeted acetylation of specific RNAs in living cells and animals, which could advance RNA-based therapies and gene regulation research.

via Phys.org|

#crispr-cas13 #gene-therapy #in-vivo

science-and-technology2 years ago•3 min saved

"Nanosheet Method Revolutionizes Long-Term Brain Imaging"

Researchers have developed a new method called the "nanosheet incorporated into light-curable resin" (NIRE) method for in vivo brain imaging, allowing for large-scale and long-term observation of neuronal structures and activities in awake mice. This method utilizes fluoropolymer nanosheets covered with light-curable resin to create larger cranial windows, enabling high-resolution imaging with sub-micrometer resolution and minimal impact on transparency for over 6 months. The NIRE method provides a powerful tool for investigating neural processes associated with growth, development, learning, and neurological disorders, offering new opportunities to enhance our understanding of the brain's complexity and function.

via Phys.org|

#brain-imaging #in-vivo #long-term-studies

science-and-technology2 years ago•60 min saved

"Long-lasting Gene Silencing and Cholesterol Control Through One-Time Epigenetic Editing in Mice"

Researchers have developed a hit-and-run epigenome editing strategy for durable and efficient gene silencing in vivo, using ZFP-based engineered transcriptional repressors (ETRs) to target the Pcsk9 gene in mice. The ZFP-based ETRs induced stable and specific epi-silencing of Pcsk9, resulting in reduced circulating levels of PCSK9 and LDL-associated cholesterol. The study also demonstrated the durability of epigenetic silencing even after active cell replication, paving the way for potential clinical applications of the epi-silencing technology.

via Nature.com|

#durable-epi-silencing #epigenome-editing #gene-silencing

science3 years ago•17 min saved

Unveiling Chikungunya Virus's Intercellular Transmission Mechanism and Potential for Vaccines

A study has found that the Chikungunya virus can be transmitted between cells through intercellular extensions, both in laboratory settings and in living organisms. These extensions, which physically connect infected and uninfected cells, facilitate the spread of the virus. The findings provide insights into the mechanisms of Chikungunya virus transmission and could potentially inform the development of intervention strategies.

via Nature.com|

#cell-to-cell-transmission #chikungunya-virus #in-vitro

science-and-technology3 years ago•5 min saved

In Vivo Prime Editing Achieved with Dual AAVs.

Researchers have demonstrated high-efficiency, therapeutically-relevant prime editing in vivo in mice with a dual-AAV system, demonstrating prime editing in the mouse brain and liver by installing putative protective mutations in vivo for Alzheimer’s disease in astrocytes and for coronary artery disease in hepatocytes, respectively. The study opens the door to creating a wide variety of prime editing therapies, which will allow a much larger number of diseases and groups of patients to be addressed than has been before with editing technologies.

via Genetic Engineering & Biotechnology News|

#aav #gene-editing #in-vivo